POPLAR Shortwave PLL Transceiver DIY Kit Featuring STC8H1K17 Microcontroller and Class E Transmission Circuit 5W Power

Features: 1. Employs an STC8H1K17 microcontroller as main control circuit, with a built-in PLL oscillator and a frequency indication circuit (using a seven-segment LED display, showing 100Hz increments; color difference is visible in the photo, currently displaying red). Operating frequency range is 7.0000-7.1000MHz, supporting CW mode with 100Hz/5kHz increments (automatic switching). 2. The receiving section uses a direct frequency conversion circuit. A TA2003 is used for receiving and mixing, outputting the audio signal to a 4558 for filtering, and then to an LM386 for amplification. 3. Employs a Class E circuit for transmission, with an output power of 5W. 4. Our original code includes an onboard digital volume control potentiometer, supporting automatic configuration saving, side-channel frequency and volume adjustment, and for crystaloscillator frequency calibration. 5. 12V power supply, PCB size 71 * 100mm, easily fits in a 76 * 35 * 100mm aluminum chassis.

Specifications: Part Name: POPLAR Shortwave PLL Transceiver DIY Kit Model: POPLAR Material: ABS Size: As shown Color: Black Power Supply: 12V Operating Current: Receive Current ≈ 100mA @ 12V; Transmit Current ≈ 700mA @ 12V Frequency Range: 7.0000-7.1000MHz, Step Frequency 100Hz/5KHz Operating Mode: CW

Package Contents: 1 set of POPLAR Shortwave PLL Transceiver DIY Kit Note: Due to differences in monitors and lighting effects, the actual color of this item may be slightly different from the color shown on the picture. Thank you! Please allow 1-2cm measurement deviation due to manual measurement.